CAS Cloning and programing

CAS3 Recovery & Cloning Services

We can clone or recover your CAS module. If the CAS module is completely dead the DME will be required and additional key purchase will be necessary when all keys are lost. Please reach out at contact us head of time before placing the order since we will need proof of ownership of the vehicle Purchaser name, billing info and card info must match registration. This is for all keys lost and the CAS being dead or any circumstance requiring a new key be programed where there is no current key for the vehicle.

Overview

The CAS3 (Car Access System) module is a critical component in various BMW and Mini Cooper models, including:

BMW Models:

• 1 Series: E81, E82, E87, E88

• 3 Series: E90, E91, E92, E93

• 5 Series: E60, E61

• 6 Series: E63, E64

• X5: E70

• X6: E71, E72

• Z4: E89

Mini Cooper Models:

• R55, R56, R57, R58, R60, R61

Common Issues

The CAS3 module may fail unexpectedly, typically due to hardware-level faults.

Symptoms of Failure:

• The CAS3 module no longer sends signals to the starter.

• Diagnostic code A0C1 - CAS: Output, Terminal 50 appears.

Our Solution

We provide a reliable cloning service to duplicate your CAS3 module onto a working replacement. The cloned module will be fully plug-and-play, offering a seamless solution.

How It Works

1. Send Us Your Original CAS Module

   • Locate the CAS3 module behind the plastic cover near the pedals, where it connects via two connectors.

2. Cloning Process

   • We clone your CAS3 module onto an identical replacement, ensuring it’s an exact copy of the original.

3. Return and Installation

   • We ship back the cloned module, ready for immediate use.

Note:
Different types of CAS2 and CAS3 modules require matching MCU processors and MASK identifiers. Compatibility examples include:

• BMW CAS2: MC9S12DG256 (MASK 2K79X)

• BMW CAS3: MC9S12DG256 (MASK 0L01Y)

• BMW CAS3+: MC9S12XDP512 (MASK 0L15Y)

Cloning across incompatible types is not possible.

Understanding the CAS Module

The Car Access System (CAS) is an advanced antitheft system that facilitates vehicle start-up. Key highlights include:

• Integrated transponder chips within vehicle keys.

• Power and data transfer via a ring coil at the ignition lock.

Key Functions:

1. Starter Enable: CAS checks key data and enables the starter if verified.

2. DME Interface: Sends coded signals to the engine control module for start authorization.

3. Antitheft Protection: Fixed ISN codes (EWS4) Rolling code ISN is for models before 2006 and will have a CAS 2 there are very few in the US market that do

Technical Details

EWS3 Mode

• Features:

  • 16-bit ISN stored in both CAS3 and DME/DDE modules.

  • Random rolling codes ensure enhanced security.

• Start Process:

  • CAS sends a random code to the DME/DDE, enabling fuel injection if matched.

  • Synchronization occurs during initial programming.

EWS4 Mode

• Features:

  • 128-bit ISN (Secret Key) for advanced encryption.

  • Fixed ISN eliminates rolling codes.

• Start Process:

  • CAS verifies ISN with DME/DDE for fuel injection enablement.

Fault Detection in CAS

The engine control module monitors the following:

• Interface Issues: Verifies signal integrity and detects interference.

• Random Code/ISN Validation: Confirms code matches between CAS and DME/DDE.

If a fault is detected, the system will inhibit engine start to ensure security.

Ready to restore your CAS3 module?

Click Add to Cart now to begin your recovery and cloning process!